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* [Xen-devel] [xen-unstable test] 142973: regressions - FAIL
@ 2019-10-21  8:23 osstest service owner
  2019-10-21  8:34 ` Jürgen Groß
  0 siblings, 1 reply; 5+ messages in thread
From: osstest service owner @ 2019-10-21  8:23 UTC (permalink / raw)
  To: xen-devel, osstest-admin

flight 142973 xen-unstable real [real]
http://logs.test-lab.xenproject.org/osstest/logs/142973/

Regressions :-(

Tests which did not succeed and are blocking,
including tests which could not be run:
 test-amd64-amd64-xl-pvshim   18 guest-localmigrate/x10   fail REGR. vs. 142750

Tests which are failing intermittently (not blocking):
 test-amd64-amd64-xl-pvshim 16 guest-localmigrate fail in 142907 pass in 142973
 test-arm64-arm64-examine     11 examine-serial/bootloader  fail pass in 142907

Tests which did not succeed, but are not blocking:
 test-amd64-amd64-xl-rtds     18 guest-localmigrate/x10       fail  like 142750
 test-amd64-amd64-xl-qemut-win7-amd64 17 guest-stop            fail like 142750
 test-amd64-i386-xl-qemuu-win7-amd64 17 guest-stop             fail like 142750
 test-amd64-amd64-xl-qemuu-win7-amd64 17 guest-stop            fail like 142750
 test-armhf-armhf-libvirt     14 saverestore-support-check    fail  like 142750
 test-amd64-i386-xl-qemut-win7-amd64 17 guest-stop             fail like 142750
 test-armhf-armhf-xl-rtds     16 guest-start/debian.repeat    fail  like 142750
 test-armhf-armhf-libvirt-raw 13 saverestore-support-check    fail  like 142750
 test-amd64-amd64-xl-qemuu-ws16-amd64 17 guest-stop            fail like 142750
 test-amd64-amd64-xl-qemut-ws16-amd64 17 guest-stop            fail like 142750
 test-amd64-i386-xl-qemuu-ws16-amd64 17 guest-stop             fail like 142750
 test-amd64-amd64-libvirt     13 migrate-support-check        fail   never pass
 test-amd64-i386-xl-pvshim    12 guest-start                  fail   never pass
 test-amd64-i386-libvirt      13 migrate-support-check        fail   never pass
 test-amd64-i386-libvirt-xsm  13 migrate-support-check        fail   never pass
 test-amd64-amd64-libvirt-xsm 13 migrate-support-check        fail   never pass
 test-arm64-arm64-xl-seattle  13 migrate-support-check        fail   never pass
 test-arm64-arm64-xl-seattle  14 saverestore-support-check    fail   never pass
 test-amd64-i386-libvirt-qemuu-debianhvm-amd64-xsm 11 migrate-support-check fail never pass
 test-amd64-amd64-libvirt-qemuu-debianhvm-amd64-xsm 11 migrate-support-check fail never pass
 test-amd64-amd64-qemuu-nested-amd 17 debian-hvm-install/l1/l2  fail never pass
 test-arm64-arm64-xl-credit1  13 migrate-support-check        fail   never pass
 test-arm64-arm64-xl-credit1  14 saverestore-support-check    fail   never pass
 test-arm64-arm64-libvirt-xsm 13 migrate-support-check        fail   never pass
 test-arm64-arm64-libvirt-xsm 14 saverestore-support-check    fail   never pass
 test-arm64-arm64-xl-thunderx 13 migrate-support-check        fail   never pass
 test-arm64-arm64-xl-thunderx 14 saverestore-support-check    fail   never pass
 test-arm64-arm64-xl          13 migrate-support-check        fail   never pass
 test-arm64-arm64-xl          14 saverestore-support-check    fail   never pass
 test-arm64-arm64-xl-credit2  13 migrate-support-check        fail   never pass
 test-arm64-arm64-xl-credit2  14 saverestore-support-check    fail   never pass
 test-amd64-amd64-libvirt-vhd 12 migrate-support-check        fail   never pass
 test-arm64-arm64-xl-xsm      13 migrate-support-check        fail   never pass
 test-arm64-arm64-xl-xsm      14 saverestore-support-check    fail   never pass
 test-armhf-armhf-xl-arndale  13 migrate-support-check        fail   never pass
 test-armhf-armhf-xl-arndale  14 saverestore-support-check    fail   never pass
 test-armhf-armhf-xl          13 migrate-support-check        fail   never pass
 test-armhf-armhf-xl          14 saverestore-support-check    fail   never pass
 test-armhf-armhf-libvirt     13 migrate-support-check        fail   never pass
 test-armhf-armhf-xl-cubietruck 13 migrate-support-check        fail never pass
 test-armhf-armhf-xl-cubietruck 14 saverestore-support-check    fail never pass
 test-armhf-armhf-xl-rtds     13 migrate-support-check        fail   never pass
 test-armhf-armhf-xl-rtds     14 saverestore-support-check    fail   never pass
 test-armhf-armhf-xl-credit2  13 migrate-support-check        fail   never pass
 test-armhf-armhf-xl-credit2  14 saverestore-support-check    fail   never pass
 test-armhf-armhf-xl-credit1  13 migrate-support-check        fail   never pass
 test-armhf-armhf-xl-credit1  14 saverestore-support-check    fail   never pass
 test-armhf-armhf-libvirt-raw 12 migrate-support-check        fail   never pass
 test-armhf-armhf-xl-vhd      12 migrate-support-check        fail   never pass
 test-armhf-armhf-xl-vhd      13 saverestore-support-check    fail   never pass
 test-amd64-i386-xl-qemut-ws16-amd64 17 guest-stop              fail never pass
 test-amd64-amd64-xl-qemuu-win10-i386 10 windows-install        fail never pass
 test-amd64-i386-xl-qemuu-win10-i386 10 windows-install         fail never pass
 test-amd64-amd64-xl-qemut-win10-i386 10 windows-install        fail never pass
 test-amd64-i386-xl-qemut-win10-i386 10 windows-install         fail never pass
 test-armhf-armhf-xl-multivcpu 13 migrate-support-check        fail  never pass
 test-armhf-armhf-xl-multivcpu 14 saverestore-support-check    fail  never pass

version targeted for testing:
 xen                  59d03d28b2bb2fb819db2c1fa2e8dc4f650d3894
baseline version:
 xen                  518c935fac4d30b3ec35d4b6add82b17b7d7aca3

Last test of basis   142750  2019-10-14 15:08:18 Z    6 days
Failing since        142777  2019-10-15 13:39:06 Z    5 days    5 attempts
Testing same since   142907  2019-10-19 08:51:01 Z    1 days    2 attempts

------------------------------------------------------------
People who touched revisions under test:
  Andrew Cooper <andrew.cooper3@citrix.com>
  Daniel De Graaf <dgdegra@tycho.nsa.gov>
  Jan Beulich <jbeulich@suse.com>
  Julien Grall <julien.grall@arm.com>
  Olaf Hering <olaf@aepfle.de>
  Tim Deegan <tim@xen.org>

jobs:
 build-amd64-xsm                                              pass    
 build-arm64-xsm                                              pass    
 build-i386-xsm                                               pass    
 build-amd64-xtf                                              pass    
 build-amd64                                                  pass    
 build-arm64                                                  pass    
 build-armhf                                                  pass    
 build-i386                                                   pass    
 build-amd64-libvirt                                          pass    
 build-arm64-libvirt                                          pass    
 build-armhf-libvirt                                          pass    
 build-i386-libvirt                                           pass    
 build-amd64-prev                                             pass    
 build-i386-prev                                              pass    
 build-amd64-pvops                                            pass    
 build-arm64-pvops                                            pass    
 build-armhf-pvops                                            pass    
 build-i386-pvops                                             pass    
 test-xtf-amd64-amd64-1                                       pass    
 test-xtf-amd64-amd64-2                                       pass    
 test-xtf-amd64-amd64-3                                       pass    
 test-xtf-amd64-amd64-4                                       pass    
 test-xtf-amd64-amd64-5                                       pass    
 test-amd64-amd64-xl                                          pass    
 test-arm64-arm64-xl                                          pass    
 test-armhf-armhf-xl                                          pass    
 test-amd64-i386-xl                                           pass    
 test-amd64-amd64-libvirt-qemuu-debianhvm-amd64-xsm           pass    
 test-amd64-i386-libvirt-qemuu-debianhvm-amd64-xsm            pass    
 test-amd64-amd64-xl-qemut-stubdom-debianhvm-amd64-xsm        pass    
 test-amd64-i386-xl-qemut-stubdom-debianhvm-amd64-xsm         pass    
 test-amd64-amd64-xl-qemut-debianhvm-i386-xsm                 pass    
 test-amd64-i386-xl-qemut-debianhvm-i386-xsm                  pass    
 test-amd64-amd64-xl-qemuu-debianhvm-i386-xsm                 pass    
 test-amd64-i386-xl-qemuu-debianhvm-i386-xsm                  pass    
 test-amd64-amd64-libvirt-xsm                                 pass    
 test-arm64-arm64-libvirt-xsm                                 pass    
 test-amd64-i386-libvirt-xsm                                  pass    
 test-amd64-amd64-xl-xsm                                      pass    
 test-arm64-arm64-xl-xsm                                      pass    
 test-amd64-i386-xl-xsm                                       pass    
 test-amd64-amd64-qemuu-nested-amd                            fail    
 test-amd64-amd64-xl-pvhv2-amd                                pass    
 test-amd64-i386-qemut-rhel6hvm-amd                           pass    
 test-amd64-i386-qemuu-rhel6hvm-amd                           pass    
 test-amd64-amd64-xl-qemut-debianhvm-amd64                    pass    
 test-amd64-i386-xl-qemut-debianhvm-amd64                     pass    
 test-amd64-amd64-xl-qemuu-debianhvm-amd64                    pass    
 test-amd64-i386-xl-qemuu-debianhvm-amd64                     pass    
 test-amd64-i386-freebsd10-amd64                              pass    
 test-amd64-amd64-xl-qemuu-ovmf-amd64                         pass    
 test-amd64-i386-xl-qemuu-ovmf-amd64                          pass    
 test-amd64-amd64-xl-qemut-win7-amd64                         fail    
 test-amd64-i386-xl-qemut-win7-amd64                          fail    
 test-amd64-amd64-xl-qemuu-win7-amd64                         fail    
 test-amd64-i386-xl-qemuu-win7-amd64                          fail    
 test-amd64-amd64-xl-qemut-ws16-amd64                         fail    
 test-amd64-i386-xl-qemut-ws16-amd64                          fail    
 test-amd64-amd64-xl-qemuu-ws16-amd64                         fail    
 test-amd64-i386-xl-qemuu-ws16-amd64                          fail    
 test-armhf-armhf-xl-arndale                                  pass    
 test-amd64-amd64-xl-credit1                                  pass    
 test-arm64-arm64-xl-credit1                                  pass    
 test-armhf-armhf-xl-credit1                                  pass    
 test-amd64-amd64-xl-credit2                                  pass    
 test-arm64-arm64-xl-credit2                                  pass    
 test-armhf-armhf-xl-credit2                                  pass    
 test-armhf-armhf-xl-cubietruck                               pass    
 test-amd64-amd64-xl-qemuu-dmrestrict-amd64-dmrestrict        pass    
 test-amd64-i386-xl-qemuu-dmrestrict-amd64-dmrestrict         pass    
 test-amd64-amd64-examine                                     pass    
 test-arm64-arm64-examine                                     pass    
 test-armhf-armhf-examine                                     pass    
 test-amd64-i386-examine                                      pass    
 test-amd64-i386-freebsd10-i386                               pass    
 test-amd64-amd64-xl-qemut-win10-i386                         fail    
 test-amd64-i386-xl-qemut-win10-i386                          fail    
 test-amd64-amd64-xl-qemuu-win10-i386                         fail    
 test-amd64-i386-xl-qemuu-win10-i386                          fail    
 test-amd64-amd64-qemuu-nested-intel                          pass    
 test-amd64-amd64-xl-pvhv2-intel                              pass    
 test-amd64-i386-qemut-rhel6hvm-intel                         pass    
 test-amd64-i386-qemuu-rhel6hvm-intel                         pass    
 test-amd64-amd64-libvirt                                     pass    
 test-armhf-armhf-libvirt                                     pass    
 test-amd64-i386-libvirt                                      pass    
 test-amd64-amd64-livepatch                                   pass    
 test-amd64-i386-livepatch                                    pass    
 test-amd64-amd64-migrupgrade                                 pass    
 test-amd64-i386-migrupgrade                                  pass    
 test-amd64-amd64-xl-multivcpu                                pass    
 test-armhf-armhf-xl-multivcpu                                pass    
 test-amd64-amd64-pair                                        pass    
 test-amd64-i386-pair                                         pass    
 test-amd64-amd64-libvirt-pair                                pass    
 test-amd64-i386-libvirt-pair                                 pass    
 test-amd64-amd64-amd64-pvgrub                                pass    
 test-amd64-amd64-i386-pvgrub                                 pass    
 test-amd64-amd64-xl-pvshim                                   fail    
 test-amd64-i386-xl-pvshim                                    fail    
 test-amd64-amd64-pygrub                                      pass    
 test-amd64-amd64-xl-qcow2                                    pass    
 test-armhf-armhf-libvirt-raw                                 pass    
 test-amd64-i386-xl-raw                                       pass    
 test-amd64-amd64-xl-rtds                                     fail    
 test-armhf-armhf-xl-rtds                                     fail    
 test-arm64-arm64-xl-seattle                                  pass    
 test-amd64-amd64-xl-qemuu-debianhvm-amd64-shadow             pass    
 test-amd64-i386-xl-qemuu-debianhvm-amd64-shadow              pass    
 test-amd64-amd64-xl-shadow                                   pass    
 test-amd64-i386-xl-shadow                                    pass    
 test-arm64-arm64-xl-thunderx                                 pass    
 test-amd64-amd64-libvirt-vhd                                 pass    
 test-armhf-armhf-xl-vhd                                      pass    


------------------------------------------------------------
sg-report-flight on osstest.test-lab.xenproject.org
logs: /home/logs/logs
images: /home/logs/images

Logs, config files, etc. are available at
    http://logs.test-lab.xenproject.org/osstest/logs

Explanation of these reports, and of osstest in general, is at
    http://xenbits.xen.org/gitweb/?p=osstest.git;a=blob;f=README.email;hb=master
    http://xenbits.xen.org/gitweb/?p=osstest.git;a=blob;f=README;hb=master

Test harness code can be found at
    http://xenbits.xen.org/gitweb?p=osstest.git;a=summary


Not pushing.

------------------------------------------------------------
commit 59d03d28b2bb2fb819db2c1fa2e8dc4f650d3894
Author: Andrew Cooper <andrew.cooper3@citrix.com>
Date:   Fri Jul 19 08:57:50 2019 +0100

    docs/sphinx: Introduction
    
    Put together an introduction page for the Sphinx/RST docs, along with a
    glossary which will accumulate over time.
    
    Signed-off-by: Andrew Cooper <andrew.cooper3@citrix.com>
    Reviewed-by: Lars Kurth <lars.kurth@citrix.com>
    Release-acked-by: Juergen Gross <jgross@suse.com>

commit 6da80b22d3713ee15cb2aca87e09b1cd3c8d2a6d
Author: Tim Deegan <tim@xen.org>
Date:   Thu Oct 17 07:18:16 2019 +0100

    MAINTAINERS: drop Tim Deegan from 'The Rest'
    
    I have not been active in this role for a while now.
    
    Signed-off-by: Tim Deegan <tim@xen.org>

commit 00fc9004be169a065c10a5fb699e353e430190c2
Author: Julien Grall <julien.grall@arm.com>
Date:   Thu Jun 13 18:11:45 2019 +0100

    xen/arm: mm: Clear boot pagetables before bringing-up each secondary CPU
    
    At the moment, boot pagetables are only cleared once at boot. This means
    when booting CPU2 (and onwards) then boot pagetables will not be
    cleared.
    
    To keep the interface exactly the same for all secondary CPU, the boot
    pagetables are now cleared before bringing-up each secondary CPU.
    
    Signed-off-by: Julien Grall <julien.grall@arm.com>
    Reviewed-by: Volodymyr Babchuk <volodymyr_babchuk@epam.com>
    Reviewed-by: Stefano Stabellini <sstabellini@kernel.org>
    Release-acked-by: Juergen Gross <jgross@suse.com>

commit 4c555ec758e829d424a85df02821b2293ca03702
Author: Julien Grall <julien.grall@arm.com>
Date:   Tue Aug 13 19:11:28 2019 +0100

    xen/arm: domain_build: Print the correct domain in dtb_load()
    
    dtb_load() can be called by other domain than dom0. To avoid confusion
    in the log, print the correct domain.
    
    Signed-off-by: Julien Grall <julien.grall@arm.com>
    Reviewed-by: Volodymyr Babchuk <volodymyr_babchuk@epam.com>
    Reviewed-by: Stefano Stabellini <sstabellini@kernel.org>
    Release-acked-by: Juergen Gross <jgross@suse.com>

commit 55ab292c42db41b05cfdba012680bf1e0ea02f7a
Author: Olaf Hering <olaf@aepfle.de>
Date:   Wed Oct 2 19:05:36 2019 +0200

    stubdom/vtpm: include stdio.h for declaration of printf
    
    The function read_vtpmblk uses printf(3), but stdio.h is not included
    in this file. This results in a warning from gcc-7:
    
    vtpmblk.c: In function 'read_vtpmblk':
    vtpmblk.c:322:7: warning: implicit declaration of function 'printf' [-Wimplicit-function-declaration]
           printf("Expected: ");
    vtpmblk.c:322:7: warning: incompatible implicit declaration of built-in function 'printf'
    vtpmblk.c:322:7: note: include '<stdio.h>' or provide a declaration of 'printf'
    
    Signed-off-by: Olaf Hering <olaf@aepfle.de>
    Acked-by: Daniel De Graaf <dgdegra@tycho.nsa.gov>
    Reviewed-by: Samuel Thibault <samuel.thibault@ens-lyon.org>
    Release-acked-by: Juergen Gross <jgross@suse.com>

commit e37058267e33e5e4525f920e3126d15891ee8dbb
Author: Andrew Cooper <andrew.cooper3@citrix.com>
Date:   Fri Jul 19 08:57:50 2019 +0100

    docs/sphinx: Indent cleanup
    
    Sphinx, its linters, and RST modes in common editors, expect 3 spaces of
    indentation.  Some bits already conform to this expectation.  Update the
    rest to match.
    
    Signed-off-by: Andrew Cooper <andrew.cooper3@citrix.com>
    Reviewed-by: Lars Kurth <lars.kurth@citrix.com>
    Release-acked-by: Juergen Gross <jgross@suse.com>

commit 951ab406511e8b752f7c9275af9d26e4c34b619d
Author: Andrew Cooper <andrew.cooper3@citrix.com>
Date:   Tue Oct 8 20:23:26 2019 +0100

    x86/microcode: Drop trailing whitespace in printk()
    
    This has actually been present since c/s bd7c09c0 in 2008, and survived
    through all of the recent microcode refactoring.
    
    Signed-off-by: Andrew Cooper <andrew.cooper3@citrix.com>
    Acked-by: Jan Beulich <jbeulich@suse.com>
    Release-acked-by: Juergen Gross <jgross@suse.com>
(qemu changes not included)

_______________________________________________
Xen-devel mailing list
Xen-devel@lists.xenproject.org
https://lists.xenproject.org/mailman/listinfo/xen-devel

^ permalink raw reply	[flat|nested] 5+ messages in thread

* Re: [Xen-devel] [xen-unstable test] 142973: regressions - FAIL
  2019-10-21  8:23 [Xen-devel] [xen-unstable test] 142973: regressions - FAIL osstest service owner
@ 2019-10-21  8:34 ` Jürgen Groß
  2019-10-21 11:06   ` Ian Jackson
  0 siblings, 1 reply; 5+ messages in thread
From: Jürgen Groß @ 2019-10-21  8:34 UTC (permalink / raw)
  To: xen-devel, Roger Pau Monné, Ian Jackson

On 21.10.19 10:23, osstest service owner wrote:
> flight 142973 xen-unstable real [real]
> http://logs.test-lab.xenproject.org/osstest/logs/142973/
> 
> Regressions :-(
> 
> Tests which did not succeed and are blocking,
> including tests which could not be run:
>   test-amd64-amd64-xl-pvshim   18 guest-localmigrate/x10   fail REGR. vs. 142750

Roger, I believe you have looked into that one?

I guess the conversation via IRC with Ian regarding the race between
blkback and OSStest was related to the issue?

If this is the case, could you, Ian, please add the workaround you were
thinking of to OSStest (unconditional by now, maybe make it condtitional
later)?


Juergen

_______________________________________________
Xen-devel mailing list
Xen-devel@lists.xenproject.org
https://lists.xenproject.org/mailman/listinfo/xen-devel

^ permalink raw reply	[flat|nested] 5+ messages in thread

* Re: [Xen-devel] [xen-unstable test] 142973: regressions - FAIL
  2019-10-21  8:34 ` Jürgen Groß
@ 2019-10-21 11:06   ` Ian Jackson
  2019-10-21 11:18     ` Roger Pau Monné
  2019-10-21 11:25     ` Jürgen Groß
  0 siblings, 2 replies; 5+ messages in thread
From: Ian Jackson @ 2019-10-21 11:06 UTC (permalink / raw)
  To: Jürgen Groß; +Cc: xen-devel, Roger Pau Monne

Jürgen Groß writes ("Re: [Xen-devel] [xen-unstable test] 142973: regressions - FAIL"):
> On 21.10.19 10:23, osstest service owner wrote:
> > flight 142973 xen-unstable real [real]
> > http://logs.test-lab.xenproject.org/osstest/logs/142973/
> > 
> > Regressions :-(
> > 
> > Tests which did not succeed and are blocking,
> > including tests which could not be run:
> >   test-amd64-amd64-xl-pvshim   18 guest-localmigrate/x10   fail REGR. vs. 142750
> 
> Roger, I believe you have looked into that one?
> 
> I guess the conversation via IRC with Ian regarding the race between
> blkback and OSStest was related to the issue?

I think this failure is something else.

What happens here is this:

2019-10-21 02:58:32 Z executing ssh ... -v root@172.16.145.205 date 
[bounch of output from ssh]
status (timed out) at Osstest/TestSupport.pm line 550.
2019-10-21 02:58:42 Z exit status 4

172.16.145.205 is the guest here.  Ie, `ssh date guest' took longer
than 10s.

We can see that the guest networking is working soon after the
migration because we got most of the way through the ssh protocol
exchange.  On the previous repetition the next message from ssh was
   debug1: SSH2_MSG_SERVICE_ACCEPT received

Looking at
  http://logs.test-lab.xenproject.org/osstest/logs/142973/test-amd64-amd64-xl-pvshim/rimava1---var-log-xen-console-guest-debian.guest.osstest--incoming.log
which is, I think, the log of the "new" instance of guest, after
migration, there are messages about killing various services.  Eg
  [1918064738.820550] systemd[1]: systemd-udevd.service: Main process
  exited, code=killed, status=6/ABRT
They don't seem to be normal.  For example:
  http://logs.test-lab.xenproject.org/osstest/logs/142865/test-amd64-amd64-xl-pvshim/rimava1---var-log-xen-console-guest-debian.guest.osstest--incoming.log
is the previous xen-unstable flight and it doesn't have them.  I
looked in
  http://logs.test-lab.xenproject.org/osstest/logs/142865/test-amd64-amd64-xl-pvshim/rimava1---var-log-xen-console-guest-debian.guest.osstest.log.gz
too and that has some alarming messages from the kernel like
 [  686.692660] rcu_sched kthread starved for 1918092123128 jiffies!
 g18446744073709551359 c18446744073709551358 f0x0 RCU_GP_WAIT_FQS(3)
 ->state=0x0 ->cpu=0
and accompanying stack traces.  But the test passed there.  I think
that is probably something else ?

ABRT suggests guest memory corruption.

> If this is the case, could you, Ian, please add the workaround you were
> thinking of to OSStest (unconditional by now, maybe make it condtitional
> later)?

I can add the block race workaround but I don't think it will help
with migration anyway.  The case where things go wrong is destroy.

Roger, am I right that a normal guest shutdown is race-free ?  I think
we tear things down in a slower manner and will therefore end up
waiting for blkback ?  Or is that not true ?

Maybe the right workaround is to disable the code in osstest which
tries to clean up a previous failed run.  I think the kernel doesn't
mind multiple blkfronts (or indeed multiple other tasks) using the
same device at once.

Ian.

_______________________________________________
Xen-devel mailing list
Xen-devel@lists.xenproject.org
https://lists.xenproject.org/mailman/listinfo/xen-devel

^ permalink raw reply	[flat|nested] 5+ messages in thread

* Re: [Xen-devel] [xen-unstable test] 142973: regressions - FAIL
  2019-10-21 11:06   ` Ian Jackson
@ 2019-10-21 11:18     ` Roger Pau Monné
  2019-10-21 11:25     ` Jürgen Groß
  1 sibling, 0 replies; 5+ messages in thread
From: Roger Pau Monné @ 2019-10-21 11:18 UTC (permalink / raw)
  To: Ian Jackson; +Cc: Jürgen Groß, xen-devel

On Mon, Oct 21, 2019 at 12:06:32PM +0100, Ian Jackson wrote:
> Jürgen Groß writes ("Re: [Xen-devel] [xen-unstable test] 142973: regressions - FAIL"):
> > On 21.10.19 10:23, osstest service owner wrote:
> > > flight 142973 xen-unstable real [real]
> > > http://logs.test-lab.xenproject.org/osstest/logs/142973/
> > > 
> > > Regressions :-(
> > > 
> > > Tests which did not succeed and are blocking,
> > > including tests which could not be run:
> > >   test-amd64-amd64-xl-pvshim   18 guest-localmigrate/x10   fail REGR. vs. 142750
> > 
> > Roger, I believe you have looked into that one?
> > 
> > I guess the conversation via IRC with Ian regarding the race between
> > blkback and OSStest was related to the issue?
> 
> I think this failure is something else.

I agree.

> What happens here is this:
> 
> 2019-10-21 02:58:32 Z executing ssh ... -v root@172.16.145.205 date 
> [bounch of output from ssh]
> status (timed out) at Osstest/TestSupport.pm line 550.
> 2019-10-21 02:58:42 Z exit status 4
> 
> 172.16.145.205 is the guest here.  Ie, `ssh date guest' took longer
> than 10s.
> 
> We can see that the guest networking is working soon after the
> migration because we got most of the way through the ssh protocol
> exchange.  On the previous repetition the next message from ssh was
>    debug1: SSH2_MSG_SERVICE_ACCEPT received
> 
> Looking at
>   http://logs.test-lab.xenproject.org/osstest/logs/142973/test-amd64-amd64-xl-pvshim/rimava1---var-log-xen-console-guest-debian.guest.osstest--incoming.log
> which is, I think, the log of the "new" instance of guest, after
> migration, there are messages about killing various services.  Eg
>   [1918064738.820550] systemd[1]: systemd-udevd.service: Main process
>   exited, code=killed, status=6/ABRT
> They don't seem to be normal.  For example:
>   http://logs.test-lab.xenproject.org/osstest/logs/142865/test-amd64-amd64-xl-pvshim/rimava1---var-log-xen-console-guest-debian.guest.osstest--incoming.log
> is the previous xen-unstable flight and it doesn't have them.  I
> looked in
>   http://logs.test-lab.xenproject.org/osstest/logs/142865/test-amd64-amd64-xl-pvshim/rimava1---var-log-xen-console-guest-debian.guest.osstest.log.gz
> too and that has some alarming messages from the kernel like
>  [  686.692660] rcu_sched kthread starved for 1918092123128 jiffies!
>  g18446744073709551359 c18446744073709551358 f0x0 RCU_GP_WAIT_FQS(3)
>  ->state=0x0 ->cpu=0
> and accompanying stack traces.  But the test passed there.  I think
> that is probably something else ?

AFAICT there's corruption when migrating and also some kind of
lockup, not sure if those are related or not yet.

> ABRT suggests guest memory corruption.
> 
> > If this is the case, could you, Ian, please add the workaround you were
> > thinking of to OSStest (unconditional by now, maybe make it condtitional
> > later)?
> 
> I can add the block race workaround but I don't think it will help
> with migration anyway.  The case where things go wrong is destroy.
> 
> Roger, am I right that a normal guest shutdown is race-free ?  I think
> we tear things down in a slower manner and will therefore end up
> waiting for blkback ?  Or is that not true ?

It doesn't really matter whether shutdown or destroy is used, the
issue is that blkback switches to state 6 (Closed) before the disk is
closed, and hence there's no way for the toolstack to detect when the
disk has actually been released.

> 
> Maybe the right workaround is to disable the code in osstest which
> tries to clean up a previous failed run.  I think the kernel doesn't
> mind multiple blkfronts (or indeed multiple other tasks) using the
> same device at once.

Since the action when the disk is found to be in use is to try to
unmount it, maybe osstest should make sure the disk is actually
mounted first by parsing the output of mount? (or maybe there's a
better way to do it)

Thanks, Roger.

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^ permalink raw reply	[flat|nested] 5+ messages in thread

* Re: [Xen-devel] [xen-unstable test] 142973: regressions - FAIL
  2019-10-21 11:06   ` Ian Jackson
  2019-10-21 11:18     ` Roger Pau Monné
@ 2019-10-21 11:25     ` Jürgen Groß
  1 sibling, 0 replies; 5+ messages in thread
From: Jürgen Groß @ 2019-10-21 11:25 UTC (permalink / raw)
  To: Ian Jackson; +Cc: xen-devel, Roger Pau Monne

On 21.10.19 13:06, Ian Jackson wrote:
> Jürgen Groß writes ("Re: [Xen-devel] [xen-unstable test] 142973: regressions - FAIL"):
>> On 21.10.19 10:23, osstest service owner wrote:
>>> flight 142973 xen-unstable real [real]
>>> http://logs.test-lab.xenproject.org/osstest/logs/142973/
>>>
>>> Regressions :-(
>>>
>>> Tests which did not succeed and are blocking,
>>> including tests which could not be run:
>>>    test-amd64-amd64-xl-pvshim   18 guest-localmigrate/x10   fail REGR. vs. 142750
>>
>> Roger, I believe you have looked into that one?
>>
>> I guess the conversation via IRC with Ian regarding the race between
>> blkback and OSStest was related to the issue?
> 
> I think this failure is something else.
> 
> What happens here is this:
> 
> 2019-10-21 02:58:32 Z executing ssh ... -v root@172.16.145.205 date
> [bounch of output from ssh]
> status (timed out) at Osstest/TestSupport.pm line 550.
> 2019-10-21 02:58:42 Z exit status 4
> 
> 172.16.145.205 is the guest here.  Ie, `ssh date guest' took longer
> than 10s.
> 
> We can see that the guest networking is working soon after the
> migration because we got most of the way through the ssh protocol
> exchange.  On the previous repetition the next message from ssh was
>     debug1: SSH2_MSG_SERVICE_ACCEPT received
> 
> Looking at
>    http://logs.test-lab.xenproject.org/osstest/logs/142973/test-amd64-amd64-xl-pvshim/rimava1---var-log-xen-console-guest-debian.guest.osstest--incoming.log
> which is, I think, the log of the "new" instance of guest, after
> migration, there are messages about killing various services.  Eg
>    [1918064738.820550] systemd[1]: systemd-udevd.service: Main process
>    exited, code=killed, status=6/ABRT
> They don't seem to be normal.  For example:
>    http://logs.test-lab.xenproject.org/osstest/logs/142865/test-amd64-amd64-xl-pvshim/rimava1---var-log-xen-console-guest-debian.guest.osstest--incoming.log
> is the previous xen-unstable flight and it doesn't have them.  I
> looked in
>    http://logs.test-lab.xenproject.org/osstest/logs/142865/test-amd64-amd64-xl-pvshim/rimava1---var-log-xen-console-guest-debian.guest.osstest.log.gz
> too and that has some alarming messages from the kernel like
>   [  686.692660] rcu_sched kthread starved for 1918092123128 jiffies!
>   g18446744073709551359 c18446744073709551358 f0x0 RCU_GP_WAIT_FQS(3)
>   ->state=0x0 ->cpu=0
> and accompanying stack traces.  But the test passed there.  I think
> that is probably something else ?

This seems to be the issue Sergey is seeing, too.

> 
> ABRT suggests guest memory corruption.

Sure? I'd think of an abort() call.

> 
>> If this is the case, could you, Ian, please add the workaround you were
>> thinking of to OSStest (unconditional by now, maybe make it condtitional
>> later)?
> 
> I can add the block race workaround but I don't think it will help
> with migration anyway.  The case where things go wrong is destroy.

Okay, no hurry then.


Juergen

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^ permalink raw reply	[flat|nested] 5+ messages in thread

end of thread, other threads:[~2019-10-21 11:26 UTC | newest]

Thread overview: 5+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2019-10-21  8:23 [Xen-devel] [xen-unstable test] 142973: regressions - FAIL osstest service owner
2019-10-21  8:34 ` Jürgen Groß
2019-10-21 11:06   ` Ian Jackson
2019-10-21 11:18     ` Roger Pau Monné
2019-10-21 11:25     ` Jürgen Groß

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